Press-plate for oil-presses



(N0 Model.)

J. H. SMALL. Press Plate for Oil Presses.

Patented Feb. 15,1881.

In mentor' MPETERS, PHOYDALITHOGRAPHER. WASHINGTON. c.

UNITEDI STATES PATENT OFFICE.

JACOB H. SMALL, OF BALTIMORE, MARYLAND,

PRESS-PLATE FOR OIL-PRESSES.

SPECIFICATION forming part of Letters Patent No. 237,779, dated February15, 1881.

Application filed December 28, 1880. (No model.)

To all whom it may concern:

Be it known that I, JACOB H. SMALL, a citizen ot the United States,residing at Baltimore, in the county of Baltimore and State of Maryland,have invented certain new and useful Improvements in Press Plates torOil- Presses; and I do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to makeand use the same,referencer being had to the accompanying drawings, and to letters oriigures ot reference marked thereon, which form apart of thisspecification.

This invention relates to the press plates or mats interposed betweenthe bags ot' crushed seed in Oil-presses.

In oil-presses now generally used the bags Ot1 crushed seed or meal arearranged in a vertical series between the bed and the follower, and aseries of press plates or mats are interposed between the bags to aid incompressing the same and facilitate the outflow of oil. Heretofore solidplates have been used provided with grooves on the upper side, whichreceive the oil from the bag above the plate, but at'- ford no outletfor the oil of the bag below the plate. Woven mats of various forms havealso been used; but they are objectionable, as they absorb more or lessot' the Oil and are liable to become clogged.

The principal Object of this invention is to provide a plate which willreceive and freely discharge the Oil from the bags on both its upper andunder sides. With such a plate the oil is more quickly expressed andless power is required to operate the press.

Figure l of the drawings is a plan view of this improved press-plate,with a portion ot' the upper gauze coverin g broken away. Fig. 2 is atransverse section on line a: .r ot' Fig. 1. Fig. 3 represents one ofthe washers used to separate the slats.

The body of the plate is composed of the side rails, A A, a series ofparallel slats, B, and a series of washers, O, interposed between theslats, all held rmly together by means of metallic clamping-rods D,passing through holes in the rails, slats, and washers. As thusconstructed, a series of longitudinal openings, a, are formed betweenthe slats, which constitute channels for the escape of the oil expressedfrom the bags in contact with the plate.

The side rails, A A, may be composed of hard Wood or metal, and one inchsquare, more or less, in cross-section. The slats B are also of hardwood or metal, one-quarter by one inch, more or less, incross-section,and set edgewise in the plate. The washers O are of iron,about one-quarter of an inch in thickness, and of less breadth than theslats, so as to leave a space between the surface of the plate and thewasher for the tlow ot'oil. The corners of thewashers may be rounded,it' desired, to enable the oil to pass the same more readily.

The plate is provided on both sides with wire-gauze coverings E E. Thesecoverings prevent the bags from pressing into the channels, affordopenings between the bags and slats for the lateral iiow of oil, andrender the entire surface of the plate active against the bags.

The plate thus constructed will receive and conduct oil from the top Ofthe bag below it as well as from the bottom Ot' the bag above it, andthe oil will be expressed from the bags more quickly and with lessexpenditure of power than in the case ot' those plates with solidbodies. which force all the Oil to the plate below the bag. Moreover,the open channels att'ord afree outlet for the oil, and are not liableto become clogged. The plate is strong and durable, and may be readilytaken apart.

What is claimed as the invention is- 1. The combination, in apress-plate, of a series Ot' slats and aseries ot' washers interposedbetween the slats and separating the same, the whole being united bymeans of clamping-rods, substantially as described.

2. A press-plate covered on one side with Wire-ganze and having a seriesof open channels entirely through the plate, substantially as described.

3. A press-plate covered On both sides with wire-gauze and having aseries of open channels entirely through the plate, substantially asdescribed.

4. A press-plate composed of a series of slats, a series ot' washersinterposed between the slats, clamping-bolts uniting said parts, andwire-gauze coverings, substantially as described.

In testimony whereot' I afx my signature in presence of two witnesses.

JACOB H. SMALL.`

Witnesses :V

THOMAS TANsLEY, J r., JOHN J. CAREY.

ROA

ICO

